The Hawley-Sakamaki Collection: an internationally recognized collection of Ryukyuan research sources

The Kajiyama Collection: represents the personal library of the late novelist Toshiyuki Kajiyama, which consists of 7,000 titles, including historical documents on Japanese emigration, Korea, and 20th century popular culture

The Takazawa Collection (Archive of Social Conflict and Social Movements): consists of over 50,000 items of archival materials on postwar Japanese social movements (Web: www.takazawa.hawaii.edu)

The Tokugawa and Bakumatsu Collection: academic journal articles focused primarily on the history of the Tokugawa and Bakumatsu periods in Japan

The Oliver Statler Collection: documents and sources gathered on Japanese culture, history and art over Statler’s career